Ultra-compact lithium niobate photonic chip for high-capacity and energy-efficient wavelength-division-multiplexing transmitters

作     者：Hongxuan Liu Bingcheng Pan Yishu Huang Jianghao He Ming Zhang Zejie Yu Liu Liu Yaocheng Shi Daoxin Dai 

作者机构：State Key Laboratory for Modern Optical InstrumentationCenter for Optical&Electromagnetic ResearchCollege of Optical Science and EngineeringInternational Research Center for Advanced PhotonicsZhejiang UniversityZijingang CampusHangzhou 310058China Ningbo Research InstituteZhejiang UniversityNingbo 315100China Jiaxing Key Laboratory of Photonic Sensing&Intelligent ImagingJiaxing 314000China Intelligent Optics&Photonics Research CenterJiaxing Research Institute Zhejiang UniversityJiaxing 314000China 

出 版 物：《Light(Advanced Manufacturing)》 (光（先进制造）（英文）)

年 卷 期：2023年第4卷第2期

页      面：57-66页

学科分类：081702[工学-化学工艺] 070207[理学-光学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 0803[工学-光学工程] 0702[理学-物理学] 

基　　金：the National Major Research and Development Program(No.2018YFB2200200/2018YFB2200201) National Science Fund for Distinguished Young Scholars(61725503) National Natural Science Foundation of China(NSFC)(91950205,61961146003,92150302,62105283,62205286) Zhejiang Provincial Natural Science Foundation(LD19F050001) Zhejiang Provincial Major Research and Development Program(No.2021C01199) Leading Innovative and Entrepreneur Team Introduction Program of Zhejiang(2021R01001) the Fundamental Research Funds for the Central Universities.The authors thank the Westlake Center for Micro/Nano Fabrication for the partial facility support 

主　　题：Lithium niobate on insulator Fabry-Perot cavity Electro-optic Transmitter Wavelength-division multiplexing 

摘      要：Recently,high-performance thin-film lithium niobate optical modulators have emerged that,together with advanced multiplexing technologies,are highly expected to satisfy the ever-growing demand for high-capacity optical interconnects utilizing multiple ***,in this study,a compact lithium-niobate-on-insulator(LNOI)photonic chip was adopted to establish four-channel wavelength-division-multiplexing(WDM)transmitters,comprising four optical modulators based on ultracompact 2×2 Fabry-Perot cavities and a four-channel WDM filter based on multimode waveguide *** fabricated chip with four wavelength channels has a total footprint as compact as 0.3×2.8 mm^(2),and exhibits an excess loss of~0.8 dB as well as low inter-channel crosstalk of–22 *** this LNOI photonic chip,high-capacity data transmissions of 320 Gbps(4×80 Gbps)on-off-keying signals and 400 Gbps(4×100 Gbps)four-level pulse amplitude signals were successfully realized with the ultra-low power consumption of 11.9 fJ/bit.